Q: What percentage of the recorded cells were in V1 ?
A: 50
Q: Are these unbiased selection of random cells?
A: Yes, as we physiologists do.
Q: How is the response defined?
A: Its the total number of spikes in that window. (800ms).
Q: What is the largest extent of the visual field you tried?
A: 8 degrees.
Q:How do you measure the intitial receptive field of a cell?
A: We use an optimal bar. We move the bar out and figure out the point where this cell does not respond any more. The minimum region outside which you don't get a response.
Comment: Other techniques can give different receptive field sizes.
Q: Figure ground and ownership?
A: Its just different words for the same thing.
Q: Didn't understand the comment about influence of IT.
A: We have the half-strength of the ownership signal at 70ms. IT, upto 100ms is silent.
Q: What about the illlusory contours? ARe they more local?
A:
Q: Does that mean that the illusory contour is withing the summation field of the neuron?
A: What we know as the summation field is quite controversial. Summation os not an explantion of the illusory contours.
Q: What about natural scenes?
A: I suspect that some of this would hold up.
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